1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb592f3b8c9fe9e7a38a8982d8b15b6f4140bed9cf1d8fdbdcb443b1fef4e30bd. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/655d5ff1-372c-4079-b961-330ebdcdbcd1.json and https://artists.proofprofile.net/proofs/artist/655d5ff1-372c-4079-b961-330ebdcdbcd1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe33db967104cf4c19952ca02067bc3f5d5668e3dc4a1d743d33480ed2f4576eb. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRX762298023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a164e831006d9c586c1a7178b34ec3e1f6caebded876e69f8b4dfd1e0e83220. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR2X42436103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc134ebee6212ebab9748aec57ba593a69776838d728e6236033e5872fd2c757. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/UK6822413448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcef05faf63b40af22e6c3a3843faec1fa55a035d8d54abc42e19dd3471da7bb8. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HUA612400190.
Nutville - Live at Ninety One Living Room
Live at Ninety One Living Room, Vol. 1 (recorded by Setmixer)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda1163c95364b1ce5a8631080299966a1c0c9a92dff03e4722310fb1d633a9e2. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/UKCKA2023749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x587591529fbbc655effe39b3f607f2515fbd08807f8f966449b3cb15c3ae4470. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRX452397222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf04d718af8406023ec45acb46fb5678d2f0cec9c166cd90a97e6aae8e4c057ce. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/UK6822413445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd3ab7949b881a92efb0849f1b3bfcdfb67eb6abdc419c11b8d8537d18d62815. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRX762298019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x073036cabf5bfd8e9f0cf1864c0bae34b424eabaa6ab4c358d294800d0c606ee. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRX762298022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe33db967104cf4c19952ca02067bc3f5d5668e3dc4a1d743d33480ed2f4576eb. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRX762298023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee16b7f4853479b25f13ab3873d51c1f764d0dc052ed8c78133a8c14048d05e9. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRX762298024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x073036cabf5bfd8e9f0cf1864c0bae34b424eabaa6ab4c358d294800d0c606ee. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRX762298022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac61b4f84b0acb633cbd1551bf04af98dc4e946e71df1f81806a369915ecd7bf. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HUACH2300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ac76ed3a9b6fb8246abc6abc71fe3eac0039f214f05eba6c5be84039ceb275a. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HUACH2300008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70af3c9f4e51295b6d8c4455c7093b64241d5feb7b1d5ee6a135988ed23e55f1. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRX282439849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x094b4237dc06f7f7004b0d5bd9e2d651a8d44a58e518c0abea812584fbefefb3. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRX282439850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd08a5ca90dde7716fa34fca40fb2afd86aa7196eb2f8672bda282dc29c49e780. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T19:28:55Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DGA082228122.